47] THE HEAD-CAPSULE OF COLEOPTERA—STICKNEY 47 



and the Bostrichoidea should probably be grouped together, while the 

 characteristic families of the Cantharoidea, the Staphylinoidea, and the 

 Silphoidea should perhaps be grouped with the Adephaga and Hydro- 

 philoidea. The Scarabaeoidea may also be included in this latter group. 

 The afl5nities of the Cerambycoidea and the RhjTichophora are too vague 

 to include either in the two larger groups. 



